A generating station is to give a power output of 200 MW. The superheat outlet pressure of the boiler is to be 170 bar and the temperature 600°C. After expansion through the 257 first-stage turbine to a pressure of 40 bar, 15% of the steam is extracted for feed heating. The remainder is reheated at 600°C and is then expanded through the second turbine stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and electrical efficiency is 95%. Calculate the maximum continuous rating of the boiler in kilograms per hour.

A generating station is to give a power output of 200 MW. The superheat outlet pressure of the boiler is to be 170 bar and the temperature 600°C. After expansion through the 257 first-stage turbine to a pressure of 40 bar, 15% of the steam is extracted for feed heating. The remainder is reheated at 600°C and is then expanded through the second turbine stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and electrical efficiency is 95%. Calculate the maximum continuous rating of the boiler in kilograms per hour.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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